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You searched for: mediatype:movies AND collection:ephemera AND subject:"Digging Tunnels"
[movies]Steam Shovel
Before occupational health and safety, this is how excavation was done. A steam shovel is digging a tunnel for the SF Muni, c. 1917.
Keywords: steam shovel; digging tunnels; excavation
Downloads: 4,189 2.00 out of 5 stars2.00 out of 5 stars(1 review)
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